Finding the Fourth Proportional to 12,436.02, 18,653.86 and 5,040.40

Step by Step Solution

1. Step 1: Write the proportion equation
   12,436.02 : 18,653.86 = 5,040.40 : x
2. Step 2: Convert to fraction form
   12,436.02/18,653.86 = 5,040.40/x
3. Step 3: Cross multiply
   12,436.02x = 18,653.86 × 5,040.40
4. Step 4: Simplify right side
   12,436.02x = 94,022,915.94
5. Step 5: Solve for x
   x = 94,022,915.94/12,436.02
6. Step 6: Final answer
   x = 7,560.53